.pre_item {
    display: block;
    width: 240px;
    margin: 8px 0;
    cursor: pointer;
}

/* 图片预览 */
.pre_modal {
    touch-action: none;
    position: fixed;
    z-index: 99;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.75);
    user-select: none;
}
.pre_modal > img {
    position: absolute;
    padding: 0;
    margin: 0;
    /* transition: all var(--delay_time); */
    transform: translateZ(0);
}